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Finding the Fourth Proportional to 85,515, 118,011.45 and 47,273.94

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Solution

The fourth proportional to 85,515, 118,011.45 and 47,273.94 is: 65,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515 : 118,011.45 = 47,273.94 : x
  2. Step 2: Convert to fraction form
    85,515/118,011.45 = 47,273.94/x
  3. Step 3: Cross multiply
    85,515x = 118,011.45 × 47,273.94
  4. Step 4: Simplify right side
    85,515x = 5,578,866,206.61
  5. Step 5: Solve for x
    x = 5,578,866,206.61/85,515
  6. Step 6: Final answer
    x = 65,238.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.